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STMicro ADSL2+ chipset addresses new services

Posted: 01 Jul 2004 ?? ?Print Version ?Bookmark and Share

Keywords:stmicroelectronics? st20190? utopia? adsl2+? analog front-end chip?

STMicroelectronics announced the availability of samples and reference boards for the ST20190 Utopia ADSL2+ product.

According to STMicro, the chipset allows ODM and AOM designers to address the new services and applications needed for the residential and SOHO markets up to the large business segment. It consists of a new generation analog front-end chip (STLC20184) and digital chip (STLC20196) integrating the DMT modem and dedicated controller. When used together with an external network processor, a flexible and scalable platform can be developed to handle the bit rate demands and the continuous introduction of additional multimedia functionalities and sophisticated networking protocols.

The company also said that by deploying the ST20190 based gateways, telecom operators and ISPs can increase revenue streams by offering new services and applications, while at the same time enlarging their customer base and reducing their operating costs.

The ADSL2+ performance is achieved due to a new generation analog front-end chip that includes a high resolution ADC/DAC, integrated programmable filters, and low noise/high linearity amplifiers and line drivers. Advanced equalization techniques were developed both in the time and frequency domain (PTEQ) and are implemented in the analog and digital part of the chipset.

The ST20190 enables multi-standard and multi-service support of ADSL, including legacy systems, as well as ADSL2 and ADSL2+. Through supporting these standards, operators can deploy Reach-Extended (G.992.3 annex L) solutions to allow more customers to receive DSL services. In addition, Enhanced-Upstream (G.992.3 Annex M) operation allows upstream bit rates over POTS (Plain Old Telephone Service) to reach rates as high as 3Mbps. DSL subscription services can be therefore customized to allow tiered service offerings for consumers and open the way for voice, video, and data to be offered over a single phone line.

The new chipset is already sampling at $9 each for quantities of 5,000 units.

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